Catalytic converters have been reported stolen from vehicles belonging to the Heritage Village Masters Association in Southbury.  The emissions-reducing devices were taken on East Hill Road and reported Thursday morning.  In January, four catalytic converters were stolen from buses parked at the Southbury Senior Center on South Main Street.  The National Insurance Crime Bureau blames the increase in thefts of catalytic converters on the rising value of chemical metals and because they can be removed in minutes.  They cost a victim up to thousands of dollars to replaced.